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Pharmacology

Chapter 20 Terms

TermDefinition
Acetylcholine The neurotransmitter responsible for transmission of nerve impulses to effector cells in the parasympathetic nervous system.
Acetylcholinesterase The enzyme responsible for the breakdown of acetylcholine.
Alzheimer's disease A disease of the brain that is characterized by progressive mental deterioration manifested by confusion, disorientation, and loss of memory, ability to calculate, and visual-spatial orientation.
Atony A lack of normal muscle tone.
Cholinergic Crisis Sever muscle weakness and respiratory paralysis due to excessive acetylcholine; often seen in patients with myasthenia gravis as an adverse effect of drugs used to treat disorder.
Cholinergic receptor A nerve receptor that is stimulated by acetylcholine
Miosis The contraction of the pupil.
Muscarinic receptors Cholinergic receptors that are located postsynaptically in the effector organs such as smooth muscle, cardiac muscle, and glands supplied by parasympathetic fibers.
Nicotinic receptors Cholinergic receptors located in the ganglia (where presynaptic and postsynaptic nerve fibers meet) of both the parasympathetic nervous system and the sympathetic nervous system; so named because they can be stimulated by the alkaloid nicotine
Parasympathomimetics Drugs that mimic the parasympathetic nervous system; also referred to as cholinergic agonist drugs.
Created by: 120763065254078